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40 relations: Acoustics, Capacitor, Corona discharge, Damping ratio, Electric machine, Electromagnetic coil, Electromagnetic compatibility, Electromagnetic interference, Electromagnetism, Electrostatics, Electrostriction, Ferromagnetism, Fluorescent lamp, Induction motor, Inductor, Lorentz force, Magnet, Magnetic resonance imaging, Magnetostriction, Mains hum, Maxwell stress tensor, Mechanical resonance, Microphonics, Natural frequency, Noise, Noise (electronics), Noise, vibration, and harshness, Normal mode, Piezoelectricity, Power inverter, Pulse-width modulation, Reluctance motor, Resistor, Resonance, Rotating unbalance, Synchronous motor, Torque, Torque ripple, Transformer, Vibration.
Acoustics
Acoustics is the branch of physics that deals with the study of all mechanical waves in gases, liquids, and solids including topics such as vibration, sound, ultrasound and infrasound.
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Capacitor
A capacitor is a passive two-terminal electrical component that stores potential energy in an electric field.
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Corona discharge
A corona discharge is an electrical discharge brought on by the ionization of a fluid such as air surrounding a conductor that is electrically charged.
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Damping ratio
Damping is an influence within or upon an oscillatory system that has the effect of reducing, restricting or preventing its oscillations.
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Electric machine
In electrical engineering, electric machine is a general term for machines using electromagnetic forces, such as electric motors, electric generators, and others.
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Electromagnetic coil
An electromagnetic coil is an electrical conductor such as a wire in the shape of a coil, spiral or helix.
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Electromagnetic compatibility
Electromagnetic compatibility (EMC) is the branch of electrical engineering concerned with the unintentional generation, propagation and reception of electromagnetic energy which may cause unwanted effects such as electromagnetic interference (EMI) or even physical damage in operational equipment.
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Electromagnetic interference
Electromagnetic interference (EMI), also called radio-frequency interference (RFI) when in the radio frequency spectrum, is a disturbance generated by an external source that affects an electrical circuit by electromagnetic induction, electrostatic coupling, or conduction.
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Electromagnetism
Electromagnetism is a branch of physics involving the study of the electromagnetic force, a type of physical interaction that occurs between electrically charged particles.
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Electrostatics
Electrostatics is a branch of physics that studies electric charges at rest.
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Electrostriction
Electrostriction (cf. magnetostriction) is a property of all electrical non-conductors, or dielectrics, that causes them to change their shape under the application of an electric field.
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Ferromagnetism
Ferromagnetism is the basic mechanism by which certain materials (such as iron) form permanent magnets, or are attracted to magnets.
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Fluorescent lamp
A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light.
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Induction motor
An induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding.
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Inductor
An inductor, also called a coil, choke or reactor, is a passive two-terminal electrical component that stores energy in a magnetic field when electric current flows through it.
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Lorentz force
In physics (particularly in electromagnetism) the Lorentz force is the combination of electric and magnetic force on a point charge due to electromagnetic fields.
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Magnet
A magnet is a material or object that produces a magnetic field.
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Magnetic resonance imaging
Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body in both health and disease.
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Magnetostriction
Magnetostriction (cf. electrostriction) is a property of ferromagnetic materials that causes them to change their shape or dimensions during the process of magnetization.
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Mains hum
Mains hum, electric hum, or power line hum is a sound associated with alternating current at the frequency of the mains electricity.
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Maxwell stress tensor
The Maxwell stress tensor (named after James Clerk Maxwell) is a symmetric second-order tensor used in classical electromagnetism to represent the interaction between electromagnetic forces and mechanical momentum.
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Mechanical resonance
Mechanical resonance is the tendency of a mechanical system to respond at greater amplitude when the frequency of its oscillations matches the system's natural frequency of vibration (its resonance frequency or resonant frequency) than it does at other frequencies.
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Microphonics
Microphonics or microphony describes the phenomenon wherein certain components in electronic devices transform mechanical vibrations into an undesired electrical signal (noise).
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Natural frequency
Natural frequency is the frequency at which a system tends to oscillate in the absence of any driving or damping force.
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Noise
Noise is unwanted sound judged to be unpleasant, loud or disruptive to hearing.
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Noise (electronics)
In electronics, noise is an unwanted disturbance in an electrical signal.
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Noise, vibration, and harshness
Noise, vibration, and harshness (NVH), also known as noise and vibration (N&V), is the study and modification of the noise and vibration characteristics of vehicles, particularly cars and trucks.
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Normal mode
A normal mode of an oscillating system is a pattern of motion in which all parts of the system move sinusoidally with the same frequency and with a fixed phase relation.
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Piezoelectricity
Piezoelectricity is the electric charge that accumulates in certain solid materials (such as crystals, certain ceramics, and biological matter such as bone, DNA and various proteins) in response to applied mechanical stress.
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Power inverter
A power inverter, or inverter, is an electronic device or circuitry that changes direct current (DC) to alternating current (AC).
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Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal.
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Reluctance motor
A reluctance motor is a type of electric motor that induces non-permanent magnetic poles on the ferromagnetic rotor.
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Resistor
A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element.
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Resonance
In physics, resonance is a phenomenon in which a vibrating system or external force drives another system to oscillate with greater amplitude at specific frequencies.
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Rotating unbalance
Rotating unbalance is the uneven distribution of mass around an axis of rotation.
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Synchronous motor
A synchronous electric motor is an AC motor in which, at steady state, the rotation of the shaft is synchronized with the frequency of the supply current; the rotation period is exactly equal to an integral number of AC cycles.
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Torque
Torque, moment, or moment of force is rotational force.
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Torque ripple
Torque ripple is an effect seen in many electric motor designs, referring to a periodic increase or decrease in output torque as the motor shaft rotates.
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Transformer
A transformer is a static electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
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Vibration
Vibration is a mechanical phenomenon whereby oscillations occur about an equilibrium point.
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Coil Noise, Coil noise, Coil whine, Electromagnetic vibration, Electromagnetically-excited acoustic noise and vibration, Electromagnetically-induced acoustic noise and vibration, Magnetic noise, Magnetic vibration.
References
[1] https://en.wikipedia.org/wiki/Electromagnetically_excited_acoustic_noise_and_vibration
